Window fastener



Jan. 17, 1928.

J. w. DILLON WINDOW FASTENER Filed Fel: 18, 1927 iNVENTOR JWBILZZOH/ mATTORNEY WITNESSES Patented Jan. 17, 1928.

uurreo srrss JAMES WILLIAMSON DILLON, OF ATLANTA, GEORGIA.

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Application filed. February 18, 1927. Serial No. 169,171.

This invention relates to window fasteners, and has for its object theprovision of a device for automatically securing a sash in predeterminedposition so that the room may he ventilated while at the same timepreventing an unauthorized person from the outside actuating thefastener and opening the win dow sufficiently to enter.

A further object of the invention is the provision of a window fastenerincluding a pivoted catch which is adapted to automatically drop iintocontacting relation with a plurality of spaced shoulders forautomaticallysecuring a pair of sash against reciproeating movementrelative to each other whereby the sash are automatically locked in anyposition either with one of the sash partlyopen for ventilating.purposesor with the sash closed. a

'lhis invention will he best understood from Li-consideration of thefollowing detailed description, in view of the accompanying drawingsforming a part of the specifi ation; nevertheless it is to heunfderstoodthat the invention is not confined to the disclosure, being susceptibleof such changes and modifications which shall define no materialdeparture from the salient features of the invention as expressed in theappended cl aim.

1n the drawing:

Figure 1 is a view in perspective of the window showing a pair of sashsecured in closed position by the device constructed in accordance withthe principles of my invention Figure 2 is :1V View in perspective ofone form of a unitary structure of spaced keeper,

Figure 8 is a vertical section of myim proved automatic locking catch,

Figure e is a horizontal section taken along the line lal of Figure 2,

Figure 5 is a view in perspective of a modified form of unitarystructure of the series of keepers,

Figure (3 is a vertical section taken along the line 6-6 of Figure 5,and

Figure '1' is a horizontal section taken along; the line 77 of Figure 5.

Referring more particularly to the drawings, 10 designates a casing inwhich the frames 11 and 12 are slidahly mounted and in which the outerface of the frame 12 is in close association with. the inner face of theframe 11. The lower bar 13 of the frame 11 is adapted to align with theupper bar let of the frame 12 when the frames are in closed position.Normally the inner faces of the bars 13 and 1d are in contact throughouttheir length and a flange (not shown) projects inwardly from the bar 13for engagement with the outer face ofthe bar 14.

Secured to the side bar 15 of the frame 11 a keeper har'lG formed of anysuitable.

material preferably sheetinetalfwhich is cut and stampedto. provide aplurality keepers 17 disposed in spaced relation at various horizontallevels. This keeper bar has side flanges 18 and 19 between whichareflocated tongues 20 pressed inwardly from an upper edge of thekeepers 17 and supported by flanges 21 whereby a tongue 20 is offsetfrom the plane of the keeper 17. The underface of each keeper provides ashoulder 22 for a purpose which will he presently described; The keeperbar has aplurality of perform tions 23 adapted to receive screws or anyform of securing means for stitching the to the frame 11. The lower endof the bottom 13015 the frame 11 is cut away adjacent the head 2st topermit ready sliding move menthetween the frames 11 and 12.

Referring more particularly to Figs. 5 to 7, inclusive. :1 modified formof keeper bar isshown in which the bar 25 is formed of a single strip ofmetal and bent to provide flanges 26 and 27. The outer face of the baris stamped to form attachingflanges 28pm) vided with perforations 29 toreceive a screw. or nail for securing the keeper bar to the windowframe. The central portion 30 of the bar is so stamped that it willprovide inclined faces 31 and shoulders 82. The upper edge of eachinclined face is disposed adjacentthe outer edges of the flanges 26 and27. lVhen the face of the bar is stamped inwardly as has been explained,side flanges 33 are formed for maintaining the inclined faces 31 in apredetermined position with respect to the flanges 26 and 2? A moreeconomical form of keeper bar will he formed of a flatstrip of metalstamped to provide the shoulders 32 and connecting inclined faces 31 andthereby eliminating the side flanges 26 and 27.

A catch generally designated by the numeral 34: is adapted to cooperatewith the keeper bar for locking the frames in predetermined positions.

Referring more particularly to Fi 3 a bracket plate 35is shown havingside flanges 36 formed integrally with the base 35 and with a rear wall37. The upper edges ofthe side plates are inclined at anangle to thehorizontal, as shown at 38. The side walls 36, base member 35, and rearwall 37 form a chamber 39 in which the lower end of a catch 40 per se.is rockably mounted on a pin 41 .mounted in perforations in the sidewalls of v the bracket. It will also be noted that the greater portionof the keeper is located outwardly of the pivot pin 41 so that the head42 of the keeper will tend to move downwardly to wards the base plate 35by gravity. The upward movement of the head 42 is limited by the rearedge 43 of the catehby reason of the fact that itengagesthe upper edge44 of the rear wall 37 when it is moved to its operativeposition shown.in dotted lines. The forward edge ofthe catch is provided with ashoulder 45 for a purpose which will presently be explained. 'A fingerp1ece 455 is provided which may be engaged by the hand for rocking thecatch 40 for releasing the same from the keepers.

The operation of my device is asfollows: Thecatch is shown in operativeposition at 3a in Fig. 1 in engagement with the lowermost keeper 1'? ofthe keeper bar and in which the rounded portion do of the head 42 isengaged beneath the keeper and prevents the frames 11 and 12 being movedrelativeto each other for opening a window. In order to open the windowthe finger pressed upon the member 45 which causes oscillation of thecatch a0 whereby the head 42 will be removed from engagement with thekeeper. The windows may then be moved relative to each other. When theframes are again moved to their normal closed position the outer face l?of the catch rides over the keepers which is facilitated by the roundedportion 416 of the head a2.

By this construction it will be seen that either frame 11 may be loweredsufficiently to ventilate a room or the frame 12 may be raised apredetermined distance or both frames may be moved relative to eachother to provide a space between the casing and the outer edges of theframes. In this posit-ion of the frames, however, it isiinpossible tomove the frames for providing a greater opening since the head 42 of thecatch will always be in engagement witha shoulder to preventunauthorized movement of the frames. However, if it be desired to movethe frames so that they will be 111 normal closed position the face 47of the catch will ride over the keepers for this purpose. In closing thewindows it is not necessary to move any locking mechanism since theframes can be moved to closed position and the gravity-actuated catch 40will drop into place beneath a keeper and lock the win dows againstfurther movement. it will also be appreciated that due to the particularconstruction of the locking mechanism and its position that the windowsmay be opened a sufficient amount for ventilation while pre venting anyone from artuatiug the catch from the outside.

Another important feature of the invention is the particularconstruction which will prevent an unauthorized person from operatingthe catch -l-O by the insertion of a flat tool between the bars liiand 1llor moving the head l-.2 out of engagement with the keeper. It will benoted that the head is cut away to provide a lip 50 which is disposed atan angle to the horizontal. when the head is in operative engagementwith the keeper. If a an piece o1. n'ictal or a knife were insertedbetween the bars 13 and let and placed in engagement with the lip 50 andthe knife were forced upwardly it would tend to move the head along aline which is in the vertical plane of the tool and would thus tend toprevent rocking of the catch. Furthermore, the outer edge or shoulder 45of the catch extends sullicientl i' forwardly that is would tend topress agar at the knife or tool and wedge it against the keeper bar 16and prevent further mo vcmcnt of the tool between the bars lfland let.The bracket which includes the base member 35, side walls :30 and rearwall 3? has flanges 5.1fm securing the bracket to the upper face of thebar l l so that the catch an will be in line with the keepers 1T. y

The asi-tion of the catch ill with respect to the keepers 32 of themodified form of keep or bars shown in Figs. 5 tot"; inclusive,identical in all respects with ilielwepers ill of the l(@(:: ')til.' bar1.6. l l I claim li fwindow fastener comprising a keeper bar having aplurality of spaced shoulders, a bracket a catch having a body pivotallymountedon the bracket, said catch being provided with a keeper engaginghead hav ing a rounded portion adapted tobe engaged beneath a shoulder,said pivotal coir nection for the catch being at one side of the centerof gravity so that the head will be normally maintained in o1. erativcposition with the keeper bar, the body having an angular portionprojecting below the head and normally within the confines of thebracket, the head having a relatively hmg straight portion adapted toliein lhitcon tact with a portion of the keeper bar and provided with a lipat the lower end, said lip being adjacent and in line with the apex ofthe angular portion of the body and forming with the body a notch, saidnotch disposed contiguous with an inner edge of the bracket, the notchterminating at the inner end thereof adjacent the upper end of thebracket, the disposition of the notch, the inner edge of the bracket,and lip being such that if an instrument is used to raise the catch fromthe outside the instrument 10 will be forced into engagement with thelip and the catch will be tightly wedged against said instrument and.prevent movement of either sash.

JAMES WILLIAMSON DILLON.

